This is not an issue, better, this is a request for a new feature

@alikon it does not matter which section to GitHub. just need a native multi-category option in Joomla

Personally I disagree. I look at articles as pieces of paper and there is
not a way that I can put a piece of paper in multiple drawers in my desk at
the exact same time.

In what way does using tags not work for you

On 11 April 2016 at 11:18, Sanek notifications@github.com wrote:

@alikon https://github.com/alikon it does not matter which section to
GitHub. just need a native multi-category option in Joomla

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#9838 (comment)

Brian Teeman
Co-founder Joomla! and OpenSourceMatters Inc.
http://brian.teeman.net/

@brianteeman that's not work for me.

i'm create site on Joomla 1.0 and after migrate to 1.5 and 2.5 and now on Joomla 3.5

I waited Multicategories add many years to the CMS. It was a tricked, when someone has added the tags because tags are not as important.

I built the structure of the site in 2007, and if I start to use the tags, I will destroy all the links on the site, will destroy the SEO and the rest, as well as destroy the links from social networking, leading to my site.

if I use tags, all links on my website will change. change links for categories and links for all the articles of the site. it will be a real tragedy for site.

How were you tricked? I cant remember anyone ever saying multiple
categories would be introduced

On 11 April 2016 at 11:31, Sanek notifications@github.com wrote:

@brianteeman https://github.com/brianteeman that's not work for me.

i'm create site on Joomla 1.0 and after migrate to 1.5 and 2.5 and now on
Joomla 3.5

I waited Multicategories add many years to the CMS. It was a tricked, when
someone has added the tags because tags are not as important.

I built the structure of the site in 2007, and if I start to use the tags,
I will destroy all the links on the site, will destroy the SEO and the
rest, as well as destroy the links from social networking, leading to my
site.

if I use tags, all links on my website will change. change links for
categories and links for all the articles of the site. it will be a real
tragedy for site.

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#9838 (comment)

Brian Teeman
Co-founder Joomla! and OpenSourceMatters Inc.
http://brian.teeman.net/

it was the most expected thing on:
http://ideas.joomla.org/forums/84261-joomla-idea-pool/suggestions/1231693-assign-multiple-categories-to-article

"multiple categories" - this is no "Tags"! it is a completely different structure for the site, especially if the site is already running for a long time. if I really needed tags, I would have chosen WordPress.

Joomla was originally built on the basis of the categories - for the first time, it was just a category, after an category with infinite number of levels and the next step should become Multicategories.

Unfortunately that is just a list of ideas. If you look at the other top
things I dont think many of them have been done either.

At the end of the day if no one writes the code then it will never happen

On 11 April 2016 at 11:42, Sanek notifications@github.com wrote:

it was the most expected thing on:

http://ideas.joomla.org/forums/84261-joomla-idea-pool/suggestions/1231693-assign-multiple-categories-to-article

"multiple categories" - this is no "Tags"! it is a completely different
structure for the site, especially if the site is already running for a
long time. if I really needed tags, I would have chosen WordPress.

Joomla was originally built on the basis of the categories - for the first
time, it was just a category, after an category with infinite number of
levels and the next step should become Multicategories.

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#9838 (comment)

Brian Teeman
Co-founder Joomla! and OpenSourceMatters Inc.
http://brian.teeman.net/

This should be done by TAGS. I personally use it with K2 component and if you got large content segmentation and multicategories I use one category and tag to create something like multicategory content. I agree with @brianteeman that one article should be in one category (canonical URL) and can be accessed by several segmentation using TAGS. Than one category is canonical for URL and You can use TAG structure for showing content using MENU. for example large portal with about 30 000 articles structure TOPIC (category) >COUNTRY (sub category) > article -- this is main structure. If you want to create menu or other links to access sets of article you should create TAGS... In K2 its working fine... I tried to use TAGS the same in Joomla com_content in earlier versions but got issues with SEO... give it a try... the biggest advantage is to create good menu with logic structure..

@cenobitz you solve your problems with 3rd party component K2. i'm also can write here - use Yoo Zoo - this component of my dream with multi category, tags and fields.

BUT!

But here we re talk about com_content, about native Joomla categories. native Joomla need multi category.

The way Joomla currently works, multi categories are essentially not possible. Categories are used for building the URL, determining ACL and filtering/grouping content.
What you want is indeed what tags are meant for. What you request isn't anything different from using the current tags imho. I don't see a difference.

@Bakual my site was created before tags and before multi level for category.

my site was created on Joomla 1.5 and i'm was have plan in 2007 for category structure on my site.

stop lie about URL's.

for example, my site have categories like:
Lady Gaga > Music Videos (lady gaga - main category, music videos - sub-category)
Lady Gaga > Albums
Lagy Gaga > Singles

and also:
Beyonce > Music Videos
Beyonce > Albums
Beyonce > Singles

i'm use tags for general categories, like "Videos" or "Music"

links on my site (for example):
http://site.com/lady-gaga/music-video/telephone
http://site.com/beyonce/music-video/single-lady

and for tags:
http://site.com/videos
http://site.com/music

i wanna put 1 Article in 2 categories on my site.

other components have multi category for Joomla. why native component com_content no have this?

this 3rd party component use com_content and
http://extensions.joomla.org/extensions/extension/structure-a-navigation/multi-categorization/cw-multicategories

why this component no part of Joomla cms?

other components have multi category for Joomla. why native component
com_content no have this?

because it is a bad idea to have duplicate content and because there are
already extensions that will do it for you.

On 15 April 2016 at 13:08, Sanek notifications@github.com wrote:

@Bakual https://github.com/Bakual my site was created before tags and
before multi level for category.

my site was created on Joomla 1.5 and i'm was have plan in 2007 for
category structure on my site.

stop lie about URL's.

for example, my site have categories like:
Lady Gaga > Music Videos (lady gaga - main category, music videos -
sub-category)
Lady Gaga > Albums
Lagy Gaga > Singles

and also:
Beyonce > Music Videos
Beyonce > Albums
Beyonce > Singles

i'm use tags for general categories, like "Videos" or "Music"

links on my site (for example):
http://site.com/lady-gaga/music-video/telephone
http://site.com/beyonce/music-video/single-lady

and for tags:
http://site.com/videos
http://site.com/music

i wanna put 1 Article in 2 categories on my site.

other components have multi category for Joomla. why native component
com_content no have this?

this 3rd party component use com_content and

http://extensions.joomla.org/extensions/extension/structure-a-navigation/multi-categorization/cw-multicategories

why this component no part of Joomla cms?

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#9838 (comment)

Brian Teeman
Co-founder Joomla! and OpenSourceMatters Inc.
http://brian.teeman.net/

you have no right to say that I made the wrong structure on the site. this is my site and that is my vision for how content should be structured on the site.

forget about the tag and think that you are now in 2007 - how would you do a website, whether you were in my place?

Enough already talking about the tags. in the CMS before there were no tags, but people have websites.

if the CMS can not solve the problem, it does not mean I'm wrong. This means that developers can not do so. and do not need to teach me how to make websites.

People here do not understand anything in SEO.

@brianteeman i'm no see any duplicate content.

everybody use link rel= canonical on websites and no have any problem with content!

just see how YooZoo use multi category and it works.

if I needed tags, I would in 2007 have chosen WordPress. who could me say in 2007 that will make Joomla tags instead of categories and Multicategories?

Why people here - http://ideas.joomla.org/forums/84261-joomla-idea-pool/suggestions/1231693-assign-multiple-categories-to-article say word "multi category"? this people no say TAGS, because everybody know difference between tags and categories!!!

@sanek4life Multi-categories is not implemented in Joomla and won't be implemented any time soon. This is a major change to the core and if this is going to be done it would be for a future major release. As stated before, someone would need to write the code and it has to be approved by the PLT.

So I will close this issue, feel free to discuss this feature on the mailinglist at https://groups.google.com/forum/#!forum/joomla-dev-cms

Is it possible to implement Multi-categories for other components in Joomla 4 now in 2023? @brianteeman

For example, in my table #__shopping_details I want to add two category fields so I added

<field name="shopping_account" extension="com_shopping.shoppingdetails" type="category" label="COM_SHOPPING_FORM_LBL_SHOPPINGDETAIL_SHO_CAT" description="COM_SHOPPING_FORM_DESC_SHOPPINGDETAIL_SHO_CAT" hint="COM_SHOPPING_FORM_LBL_SHOPPINGDETAIL_SHO_CAT"/>

<field name="shopping_item_category" extension="com_shopping.shoppingdetails" type="category" label="COM_SHOPPING_FORM_LBL_SHOPPINGDETAIL_SHOOPING_ITEM" description="COM_SHOPPING_FORM_DESC_SHOPPINGDETAIL_SHOOPING_ITEM" hint="COM_SHOPPING_FORM_LBL_SHOPPINGDETAIL_SHOOPING_ITEM"/>

But it will allow me to add categories field twice which could be achieved using multiple true instead of adding two category fields which I do not want what I want is to allow adding two category fields with different categories in it respectively so the same table will have two different categories menu to add categories in it, for example, shopping_account and shopping_item_category and will have different menus to add categories in it...is it achievable in Joomla using Category field? can someone guide me on the same?
Do I need to change extension="com_shopping.shoppingdetails" and extension="com_shopping.shoppingdetails" to something else?